Jack



June 26, 1928. 1,675,015

. F. ALDINGER 4 JACK Filed May 20. 1926 2 Sheets-Sheet l June 26, 1928.

F. ALDINGER JACK 2 Sheets-Sheet 2 Filed May 20. 1926 June 26,

FRED arnrnonn, or" AGKLEY, IOWA.

JACK.

Application filed May 29, 1926. Serial No. 110,401.

This invention relates to improvements in jacks, and has for its principal object to provide a lifting jack to be used in connection with tractors.

Another object of the invention is to provide a jack, mounted on a base, said jack being slidable on said base whereby it may be adjusted.

A still further obj ect of the invention is to provide a lifting jack having means whereby it may be manually adjusted either vertically or horizontally beneath the axle of a tractor, or other vehicle.

Another object of the invention is to provide a base, having a plurality of lifting jacks thereon, one of said jacks being stationary'on said base, and another of said jacks being slidable thereon, by means of rollers.

A still further object of the invention is to provide a base, having a stationary jack on one end thereof, adapted to hold the rear end of a tractor, or other mechanism, and an adjustable jack on the front end thereof, adapted to receive the radius rod of the tractor and move tl e front part of the tractor forward or backward, and both of said jacks being provided with means whereby they may be manually operated to elevate said tractor.

Another object of the invention is to provide in combination with a jack of this charactor, a wedge for steadying the front axle of the tractor, in order to prevent the same from tipping sideways.

In the drawings wherein 1 have shown the preferred embodimentof my invention,

Figure 1 is an elevational view of my improved jack;

Figure 2 is a top plan view thereof;

Figure 3 is a sectional view on line 33 of Figure 1;

Figures 4 and 5 are detail views of adjustments Figure 6 is a view in elevation of the movable jack;

Figure 7 is a front stationary jack;

Like reference characters indicate like parts throughout the following specification, and in the several views in the drawings in which: 1 indicates my improved lifting ack, which consists of a base 2, formed of three channel irons, 3, 4 and 5, said channel iron sections, being connected together by means of screws, bolts, rivets, or the like. Fixedly elevational view of the mounted on one end of said base 2, is a plate 6, forn'iing a base for the internally screw threaded section 7, of'the jack, adapted to receive the screw 8, having right angularly disposed borestherethrough, whereby a handle may be readily inserted for operating the jack.

This jack is provided with an arcuate surface 9, in order to readily accommodate the rear end of a tractor, or other device. A lug 10 is provided on the upper surface of the plate 6, and a similar lug 11 is provided on the under surface of said plate, said lugs having internally, screw threaded bores 12 and 13 therein, adapted to receive the screws 14 and 15, proected through the block 16, in order to hold the same in place. This block has an opening, through which the gear shaft .18 is adapted to project a gear wheel 19 is fixed to said shaft, and is adapted to mesh with the similarly formed gear wheel 20, rotatably mounted in projection 21, on the lower side of said plate 6. The gear wheel 20, is adapted to operate a rod 22, which rod is screw threaded within the lug 23, on the under-surface of the jack 24, said jack being slidably mounted on the base 2, by means of rollers 25, 26,27, and 28, and being adjustable by means of the gear wheels 19 and 20, adapted to be rotated by means of the handle 29.

The adjustable jack 24, is provided with a wedge shaped surface 31, adap ed to fit over the radius rod of the tractor, whereby the front end of the tractor may be moved backward and forward, by means of the adj ustment of the jack 24.

An attachment 32, is provided, the same being of such a shape as to be readily fit within the wedge shaped members 31, whereby the adjustable jack may be used on the rear end of the tractor or other vehicle, if desired.

A wedge 33, is provided for steadying the tractor in upright position, in order that it will be prevented from tipping sideways. This wedge is adapted to fit on the front axle of a tractor, the same being adjustable by means of the bolt 34, having a nut 35 thereon for tightening the same in position.

in the operation of my device, nut 35 is unscrewed and the wedge portions 33 are drawn apart. The wedge portions 33 are then placed upon the top of the front axle of the structure between. the front axle and the body portion of the tractor. Nut 35 is tions 33 together so that the body portion of the tractor will be held in a rigid position with relation to the front axle and will not allow the body portion of the tractor to fall to one side when the bolts which are located near the central portion of the tractor are unbolted in order to make repairs to the transmission of the tractor. The jack is then placed underneath thetractor with rear jack 9 under the rear axle housing of the tractor and front jack 24 underneath the radius rods of the front portion of the tracto. The jacks 9 and M are then raised by inserting a suitable tool through the openings tlie jaclis and rotating such tools. The bolts at the central portion of the tractor may then be unboltcd and the crank handle rotated in order to move the front portion of the tractor fifteen or twenty inches forward from the rear portion of the tractor and thus enable one to repair the parts of the transmission,

7 This jack is adapted to be used either on tractors, or automobiles, and is readily applied to shop work, or field worle It will thus be seen that l have provided an adjustable jack, by means of which the front wheels of a tractor may be locked in upright position, whereby the front or rear end of the same may be lifted, and the different parts repaired, as required.

,l-laving described my invention that which I claim to be and desire to procure by Letters Patent is:

1. A jack structure comprising a base, a plurality of jacks comprising a rear jack and a front jack mounted thereon, said rear jack being adapted to support the rear of a tractor and said front jack being adapted to support the front of a tractor, and means placed on the front axle of said tractor between said axle and the body portion of said tractor to maintain said body portion in upright positionwhen said tractor is unbolted at its center. a

2. A jack structure comprising a base, a plurality of jacks comprisinga' rear jack and a front jack mounted thereon said rear jack being adapted to support the rear end I jack being adapted to support the rear of tractor and said front jack being adapted to support the front of a tractor, and an adjustable wedge device comprising two wedge portions and means for adjusting said wedge portions toward and away from each other placed on the front axle of said tractor between said axleand the body portion of said tractor to maintain said body portion in upright position, when said tractor is unbolted at its center. I

In. testimony whereof'l affix my signature.

FRED, ALDINGER. 

